66-Dy-157



Spin
     Level energy(keV)   Spin & Parity       
     ----------------------------------------
       ground state      3/2-                  
       1.99500E+02       11/2-                 
Mass (The Ame2012 atomic mass evaluation (II) by M.Wang, G.Audi, A.H.Wapstra, F.G.Kondev, M.MacCormick, X.Xu, and B.Pfeiffer Chinese Physics C36 p. 1603-2014, December 2012)
     156.925470660 ± 0.000005744 (amu)  [mass excess = -69423.633 ± 5.351 (keV) ]
Beta-decay energy (calculated as M(A,Z)-M(A,Z+1), taken from Ame2012)
     -2593.062 ± 23.799 (keV) 
Strong Gamma-rays from Decay of Dy-157 (Compiled from ENSDF as of March 2011)
  [ Intensities before May 23th of 2013 were values when total intensity of the decay mode was 100(%) and a branching ratio of each decay mode was not multiplied. ]
   γ-ray energy(keV)  Intensity(%)  Decay mode 
  ----------------------------------------------------------
         37.3            23.           IT 
         61.0             6.9          IT 
         87.0            20.93         IT 
  ----------------------------------------------------------
         83.04            0.26         EC 
        182.42            1.33         EC 
        326.34           93.           EC 
  ----------------------------------------------------------
     *: relative, ~ approximate, ? calculated or estimatted 
     >: greater than or equal to, <: less than or equal to  
  [ Intensities; total intensity of the nuclide is 100(%). ]
Decay data(Chart of the Nuclides 2014)
     Decay mode     Half-life 
       EC           8.14 H 4         
       IT           21.6 MS 16       
Evaluated Data Libraries
     Links to the libraries. 

Parent Nuclides by Reactions in JENDL-4.0
     Dy-156 (Z= 66, A=156), MT=102 (n,γ)
     Dy-158 (Z= 66, A=158), MT= 16 (n,2n)
     Dy-159 (Z= 66, A=159), MT= 17 (n,3n)

Fission Yields for Fission Products in JENDL-4.0 Fission Yield Data

   - Neutron-induced Fission Yields (from main actinide nuclides) - Independent Fission Yield -
     Product  Nuclide  Energy   Fission Yield  Uncertainty(1σ)
    -----------------------------------------------------------
     Dy-157    U-235   High      2.323190e-12   1.486840e-12 
     Dy-157   Pu-239   High      8.565550e-10   5.481950e-10 
    -----------------------------------------------------------
    Thermal=0.0253eV, Fast=500keV(Fast reactor spectrum), High=14MeV
   - Neutron-induced Fission Yields (from main actinide nuclides) - Cumulative Fission Yield -
     Product  Nuclide  Energy   Fission Yield  Uncertainty(1σ)
    -----------------------------------------------------------
     Dy-157    U-235   High      2.323190e-12   1.484630e-12 
     Dy-157   Pu-239   High      8.565550e-10   5.478400e-10 
    -----------------------------------------------------------
    Thermal=0.0253eV, Fast=500keV(Fast reactor spectrum), High=14MeV
      → Neutron-induced and Spontaneous Fission Yields of all nuclides in JENDL-4.0 Fission Yield Data